Pythagorean /p(a)ɪˌθaɡəˈɹiːən/adjective 3noun 1forms 3 adjective3 •Pertaining to Pythagoras. •Pertaining to the philosophy of Pythagoras. •Following the lifestyle advocated by the Pythagoreans; specifically, vegetarian. noun1 •A follower of Pythagoras; someone who believes in or advocates Pythagoreanism.Plato could still speak the language of archaic myth. He could speak it, because he was a Pythagorean, and myth was their technical language. — 1981 formsPythagoreans · more Pythagorean · most Pythagorean